Roller-bearing.



No. 847,261. PATENTED MAR. 12, 1907.

. G. RENNERPELT.

ROLLER BEARING.

APPLIOATION 111.21) 00124, 1906- 4 W/T/VESSES INVENTOH n1: NORRIS PETERS cb., wasnmcrou, 0. c.

GUSTAF RENNERFELT, OF SORANTON, PENNSYLVANIA.

ROLLER-BEARENG.

Specification of Letters Patent.

Patented March 12. 1907.

Application filed October 4. 1906. Serial No. 337,389.

To all whom it may concern.-

Be it known that I, GUSTAF RENNERFELT, a subject of the King of Sweden, and a resident of Scranton, in the county of Lackawanna and State of Pennsylvania, United States of America, have invented certain new and useful Improvements in Roller-Bearings, of which the following is a specification.

My invention relates to improvements in roller-bearings; and its object is to provide a bearing of this class which is' simple and cheap in its construction and efficient in its operation.

I will describe my invention in the following specification and point out the novel features thereof in claims.

Referring to the drawings, Figure 1 is a sectional side elevation of a roller-bearing constructed according to my invention.

Fig. 2 is a sectional end elevation of the roller-bearing shown in Fig. 1, the section being taken through the line X X of Fig. 1 and the View taken in the direction of the arrows. Fig.3 is avertical side elevation, in section, of aroller-bearing made according to a modification of my invention. Fig. 4 is an end view of some of the parts shown in Fig.

3, this figure also being shown in section, the section being taken through the line Y Y of Fig. 3 and the view being taken in the direc tion of the arrows. 'Fig. 5 shows a detail of my construction, this figure being a sectional side elevation of a roller-stud.

Like characters of reference designate corresponding parts in all of the figures.

1 designates a shaft or journal to which my bearing is attached.

2 designates a sleeve or bushing of hardened metal, which may, if desired, be placed over the shaft 1 within the bearing.

10 1O designate a plurality of rollers placed around the shaft and in contact with the sleeve or bushing 2.

4 is a casing, the inner portion of which forms a track 5 for the rollers. This track is of somewhat smaller diameter than the rest of the casing and also of less width than the casing. The purpose of this will be shown clearly hereinafter. At the sides of this casing and fastened together and to the casing by screws or bolts 6 6 are two plates 20..

These plates are placed one on each side of the rollers and arranged to come in contact with the ends of the rollers, so that they constitute a guiding-frame for the rollers and serve the purpose of keeping them in parallelism with each other and with the shaft 1. For the purpose of facilitating this function of the plates 20 I prefer to construct them, as shown, with annular portions 21 22 projecting inwardly and having their inner faces finished. WVhen held in position, these fin ished surfaces are held at a fixed distance apart substantially equal to the width of the rollers. The inner sides of these plates between the annular projecting portions 21 and 22 are constructed to form a chamber, as shown at 23, to provide clearance for the moving parts within them.

Outside of the projecting annular portion 21 the inner surface of these plates is de pressed, as shown at 24, and this depression, together with that formed by the peculiar construction of the roller-track and the rest of the casing over which the track projects, forms at either side of the track annular spaces or dust-grooves 25 25, into which particles of dust or other dirt may fall when removed fiom the track of the rollers.

The rollers 10 are constructed, as shown in Fig. 1., with a central hub portion 11, having a thin web 12 extending from one side thereof to the flange or rim 13. This rim is also constructed with a thin cross-sectional area, so that it is somewhat elastic or flexible in a radial direction. This is an important feature, as it enables the roller to bear upon-the shaft throughout the entire length of the roller, even though the shaft be somewhat bent under its load or in case the parts have slight inaccuracies, due to defective workmanship or materials.

In Figs. 3 and 4 the rollers 10 are constructed somewhat differently in order to give them a greater flexibility. In this case the rim 13 is separated from the web 12. The web is here shown as extending from the center of the hub 11 and of less diameter than the inner diameter of the rim, so thatthere is a clearance between the outside of the web and the inside of the rim.

The centers of the rollers are bored out for the reception of studs 40. One of these studs is shown in Fig. 5 and comprises a head 41, a shank 42, and a collar 43. Two small holes 44 44 are drilled into the opposite sides of the head 41, and two similar holes 45 are drilled through the collar 43 and into the shank 42.

Between the adjacent rollers are springs 46, the ends of which are inserted in theholes 44 44 and 45 45 of the studs. These springs have a tendency to straighten out and may conveniently be made of straight pieces of spring-wire, such as piano-wire. They serve t e purpose of keeping the rollers in contact with the track 5 and of holding the rollers apart. While they hold the rollers at an approximately constant distance from one another, they also allow a certain amount of free and independent movement to each roller. These springs on one side of each stud extend through the collar 43 and into the shank 42 of the stud, thus locking the collar to the stud.

At 50 I have shown a dust-scraper, which may be attached to one of the studs 40 in any convenient mannerfor example, by being screwed to the head and collar of the stud, as at 41. The other end 52 of this dustscraper may be arranged to rest upon and be drawn over the track 5 as the rollers travel over the track and to remove any dust or other foreign matter which may be upon the surface ofthe track. Such dust will then fall into the dust-grooves 25, which are provided at either side of the track for this pur pose.

In Fig. 1 I have shown at 3 a pulley on the shaft 1. A load may be ap lied to the bearing through such pulley. are constructed with unsymmetrically-located webs, I prefer to place the rollers in such a position relative to the pulley 3 that the webs 12 are away from the pulley and the free edges of the rims are turned toward the ulley, as is shown in Fig. 1.

The flexibility and elasticity of the rims of the rollers insures more noiseless operation and the rollers will be less affected by dust or dirt or inaccuracies of construction.

The novel features of this invention may be embodied in many other forms and designs ofbearings. I have shown two forms of bearings to show that I do not limit myself tothe exact details of construction which I have herein shown and described to illustrate my invention.

The simplicity of construction of this bearing makes it cheap to manufacture, and slight inaccuracies of construction or roughness of manufacture will have but little effect upon its efficiency.

-W-hat I claim is- 1. In a roller-bearing, the combination of a plurality of studs, a roller loosely mounted upon each of the studs and springs connecting the studs together.

*2. In a roller-bearing, the combination of a plurality of studs, a roller loosely mounted upon each of the studs and a spring between each of two contiguous studs, said springbeing arranged to connect all of the studs together.

3". In a roller-bearing, the combination of a plurality of studs, a roller loosely mounted upon each of the studs, a circular track for en the rollers the rollers and a spring between each of two contiguous studs, said spring being arranged to hold the rollers against said track and apart from each other.

4. In a roller-bearing, the combination of a plurality of studs, a roller loosely mounted upon each of the studs, a shaft, a track for the rollers, and springs connecting the studs together, said springs being arranged to hold the rollers against the track and apart from each other.

5. The combination of a plurality of studs, a roller loosely mounted upon each of the studs, a shaft, a casing, a portion of the casing being constructed to form a circular track, springs connecting the studs together, a fixed plate on each side of and in contact with the rollers.

6. The combination of a plurality of studs, a roller loosely mounted upon each of the studs, a shaft, a casing, a portion of the casing being constructed to form a circular track, means connecting the studs together,

a plate attached to each side of the casing,

said plates being in contact with the ends of the rollers and arranged to hold the rollers in parallelism, said plates being also constructed to form a chamber for the ends of the studs and their connecting means.

7. The combination of a plurality of studs, a roller loosely mounted upon each of the studs, a shaft, a casing, a portion of the casing being constructed to form, a circular track, springs connecting the studs together, a plate attached to each side of the casing, said plates having projecting annular portions with finished surfaces in contact with the ends of the rollers and arranged to hold the rollers in parallelism.

8. The combination of a plurality of studs, a roller loosely mounted upon each of the studs, a shaft, a casing, a portion of the easing being. constructed to form a circular track, springs connecting the studs together, a plate attached to each side of the casing said plates being in contact with the ends of the rollers and arranged to hold the rollers in parallelism, said plates being constructed to form a chamber for the studs and their connecting-springs.

9. In a roller-bearing, the combination of a shaft, a track, a plurality of rollers, each of said rollers having a rim flexible in a radial direction, and flexible means extending between and attached at the centers of contiguous rollers for keeping the rollers apart from each other.

lOJA shaft, a track, a plurality of rollers.

means attached at the hubs of the rollers for keeping the rollers in contact with the track and apart from each other.

12. A shaft, a track, a plurality ofrollers' between said shaft and track, each of said rollers having a hub and a flexible rim separate from the hub, a plate on each side of the rollers arranged to hold the rollers in parallel ism, and flexible means attached at the hubs of the rollers for keeping the rollers in con tact with the track and apart from each other.

13. A plurality of studs, a roller loosely mounted upon each stud, each of said rollers having a rim flexible in a radial direction; a shaft, a casing, a portion of the casing being constructed to form a circular track for the rollers, a plate attached to each side of the casing in contact with the ends of the rollers and arranged to hold the rollers in parallelism, and springs connecting the studs together.

14. A plurality of studs, a roller loosely mounted upon each stud, each of said rollers having a hub and a flexible rim; a shaft, a casing, a portion of the casing being constructed to form a circular track for the roll ers, a plate attached to each side of the casing, said plates having projecting annular portions with finished surfaces in contact with the ends of the rollers and arranged to hold the rollers in parallelism, and a spring between each of two contiguous studs, said springs being arranged to hold the rollers against the track and apart from each other. i 15. A plurality of studs, a roller loosely mounted upon each stud, each of said rollers having a rim flexible in a radial direction; a shaft, a casing, a portion of the casing being constructed to form a circular track for the rollers, a plate attached to'each side of the casing, said plates having projecting annular portions with finished surfaces in contact with the ends of the rollers and arranged to hold the rollers in parallelism, the casing and the plates being arranged to form dustgrooves at each side of the circular track; and a spring between each of two contiguous studs, said springs being arranged to hold the rollers against the track and apart from each other.

16. A plurality of studs, a roller loosely mounted upon each stud, each of said rollers having a rim flexible in a radial direction; a shaft, a casing, a portion of the casing being constructed to form a circular track for the rollers, a plate attached to each side of the casing, said plates having projecting annular portions with finished surfaces in contact with the ends of the rollers and arranged to hold the rollers in parallelism, the casing and the plates being arranged to form dustgrooves at each side of the circular track; a spring between each of two contiguous studs, said springs being arranged to hold the rollers against the track and apart from each other, and a dust-scraper connected to move with the rollers.

17. A shaft, a track, a plurality of rollers between said shaft and track, each of said rollers having a rim flexible in a radial direction, and a plate on each side of the rollers in contact with the rims, said plates having inwardly-proj ecting annular portions arranged to hold the rollers in parallelism.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GUSTAF RENNERFELT.

Witnesses JOHN B. JORDAN, Y C. J. KLUEH. 

